Puppet users - Apr 2010 - Do not edit above this line policy

Hi, list:

I''m on my first steps using Puppet.  Now that the easiest parts are
somehow
tamed more and more questions do arise.  But let''s go one by one.

For some computers/services we delegate some parts of their administration 
(i.e. development environments).  I''ll take an easy example on the
/etc/hosts
file:

There should be a ''127.0.0.1 localhost'' stanza and then one
pointing the
host''s public IP to its FQDN.  But then, the "end user"
should have to be
free to add other entries as needed.

I''m aware that I could go the path of forcing presence on a line by
line
fashion but is there any easier procedure for a "do not edit above this
line"
policy so puppet can manage by means of a template part of the file and then 
allow for hand-made modifications on the end part of it?

TIA.

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2010/4/3 Jesús M. Navarro <jesus.navarro@andago.com>
> Hi, list:
>
> I''m on my first steps using Puppet.  Now that the easiest parts
are somehow
> tamed more and more questions do arise.  But let''s go one by one.
>
> For some computers/services we delegate some parts of their administration
> (i.e. development environments).  I''ll take an easy example on the
> /etc/hosts
> file:
>
> There should be a ''127.0.0.1 localhost'' stanza and then
one pointing the
> host''s public IP to its FQDN.  But then, the "end user"
should have to be
> free to add other entries as needed.
>
> I''m aware that I could go the path of forcing presence on a line
by line
> fashion but is there any easier procedure for a "do not edit above
this
> line"
> policy so puppet can manage by means of a template part of the file and
> then
> allow for hand-made modifications on the end part of it?
>
> TIA.
>
>
You might want to look at http://augeas.net/ It allows you to have specific
entries in a file, like /etc/hosts, end users can modify the file as needed
but you will have control of those specific entries with puppet+augeas.
http://projects.reductivelabs.com/projects/puppet/wiki/Puppet_Augeas

Hope that helps.

-- 
Tony

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